
\begingroup
\centering
\begin{tabular}{lcccc}
   \toprule
                                & (1)           & (2)           & (3)      & (4)\\  
   $\textbf{Orthophosphate (filtered)}$\\
   IHS restored wetland (acres) & 0.004$^{***}$ & 0.003$^{***}$ & 0.0002   & 0.0001\\   
                                & (0.0007)      & (0.0007)      & (0.0008) & (0.0008)\\   
   Ever-treated                 &               &               & X        & X\\  
    \\
   Dependent variable mean      & 0.12000       & 0.11573       & 0.13438  & 0.13546\\  
   Observations                 & 190,680       & 163,404       & 25,873   & 24,912\\  
   Adjusted R$^2$               & 0.18827       & 0.22590       & 0.35900  & 0.36667\\  
\end{tabular}
\par\endgroup


